In Hartle's Introduction to General Relativity, he studies the deflection of light for a spherical mass in chapter 9. The estimate is ##1.7## seconds of arc for a light ray grazing the Sun. There would be less deflection for a light ray further from the Sun. In other words, it depends on the mass of the Sun and the impact parameter.Mikael17 said:OK, how much would light then bend , when passing nearby a milkyway size galaxy ?
Gravitational lensing is a phenomenon in which the gravitational force of a massive object, such as a galaxy, bends the path of light from a distant object. This results in the distant object appearing distorted or magnified to an observer on Earth.
Gravitational lensing magnifies galaxies by bending the path of light from the galaxy, causing it to appear larger and brighter to an observer on Earth. This occurs when the light from the distant galaxy passes near a massive object, such as a galaxy cluster, which acts as a lens due to its strong gravitational pull.
Gravitational lensing is caused by the warping of space-time by massive objects. According to Einstein's theory of general relativity, massive objects create a curvature in space-time, and this curvature can affect the path of light passing near the object.
Gravitational lensing is used in astronomy to study distant objects that would otherwise be too faint or small to observe. By magnifying these objects, scientists can gather more information about their properties, such as their size, mass, and composition.
Yes, gravitational lensing can affect our view of the entire universe. It can distort the images of distant galaxies, making them appear larger or more elongated than they actually are. This can make it challenging for scientists to accurately measure the properties of these galaxies and understand the structure of the universe as a whole.